999: Complications of medical care, not elsewhere classified
Includes:
complications, not elsewhere classified, of:
dialysis (hemodialysis) (peritoneal) (renal)
extracorporeal circulation
hyperalimentation therapy
immunization
infusion
inhalation therapy
injection
inoculation
perfusion
transfusion
vaccination
ventilation therapy
Use additional code, where applicable, to identify specific complication
Excludes:
specified complications classified elsewhere such as:
complications of implanted device (996.0-996.9)
contact dermatitis due to drugs (692.3)
dementia dialysis (294.8)
transient (293.9)
dialysis disequilibrium syndrome (276.0-276.9)
poisoning and toxic effects of drugs and chemicals (960.0-989.9)
postvaccinal encephalitis (323.51)
water and electrolyte imbalance (276.0-276.9)
999.4 Anaphylactic reaction due to serum
Allergic shock
Anaphylactic shock due to serum
Anaphylactoid reaction due to serum
Anaphylaxis
Excludes:
ABO incompatibility reaction due to transfusion of blood or blood products (999.60-999.69)
reaction:
allergic NOS (995.0)
anaphylactic:
NOS (995.0)
due to drugs and chemicals (995.0)
other serum (999.51-999.59)
shock:
allergic NOS (995.0)
anaphylactic:
NOS (995.0)
due to drugs and chemicals (995.0)
999.41: Anaphylactic reaction due to administration of blood and blood products
999.42: Anaphylactic reaction due to vaccination
999.49: Anaphylactic reaction due to other serum

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